package com.wzy.netty.core.codec2;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

import java.util.Random;

/**
 * 描述
 * 创建人    Wzy
 * 创建时间: 2020-05-21  15:06
 */
public class NettyClientHandler extends ChannelInboundHandlerAdapter {
    /*
     * 当通道就绪就会触发该方法
     * */
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        /*随机的发送 worker 或者 student*/
        int random = new Random().nextInt(3);
        MyDataInfo.MyMessage myMessage = null;
        if (0 == random) {
            myMessage = MyDataInfo.MyMessage.newBuilder().setDataType(MyDataInfo.MyMessage.DateType.StudentType)
                    .setStudent(MyDataInfo.Student.newBuilder
                            ().setId(5).setName("玉麒麟 卢俊义").build()).build();
        } else {
            myMessage = MyDataInfo.MyMessage.newBuilder().setDataType(MyDataInfo.MyMessage.DateType.WorkerType)
                    .setWorker(MyDataInfo.Worker.newBuilder
                            ().setAge(22).setName("老李").build()).build();
        }

        ctx.writeAndFlush(myMessage);

    }

    /*当通道有读取时间就会触发*/

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        System.out.println("服务器回复的消息:" + buf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器的地址:" + ctx.channel().remoteAddress());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}
